package com.hqd.ch03.v50.boot.autoconfigure.condition;

import com.hqd.ch03.v50.context.annotation.Conditional;

import java.lang.annotation.*;

@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Conditional(OnBeanCondition.class)
public @interface ConditionalOnBean {

    /**
     * The class types of beans that should be checked. The condition matches when beans
     * of all classes specified are contained in the {@link BeanFactory}.
     *
     * @return the class types of beans to check
     */
    Class<?>[] value() default {};

    /**
     * The class type names of beans that should be checked. The condition matches when
     * beans of all classes specified are contained in the {@link BeanFactory}.
     *
     * @return the class type names of beans to check
     */
    String[] type() default {};

    /**
     * The annotation type decorating a bean that should be checked. The condition matches
     * when all the annotations specified are defined on beans in the {@link BeanFactory}.
     *
     * @return the class-level annotation types to check
     */
    Class<? extends Annotation>[] annotation() default {};

    /**
     * The names of beans to check. The condition matches when all the bean names
     * specified are contained in the {@link BeanFactory}.
     *
     * @return the names of beans to check
     */
    String[] name() default {};

    /**
     * Strategy to decide if the application context hierarchy (parent contexts) should be
     * considered.
     *
     * @return the search strategy
     */
    SearchStrategy search() default SearchStrategy.ALL;

    /**
     * Additional classes that may contain the specified bean types within their generic
     * parameters. For example, an annotation declaring {@code value=Name.class} and
     * {@code parameterizedContainer=NameRegistration.class} would detect both
     * {@code Name} and {@code NameRegistration<Name>}.
     *
     * @return the container types
     * @since 2.1.0
     */
    Class<?>[] parameterizedContainer() default {};

}
